300ex axle in 350x problem

[fire1]

i bought a 250x/300ex durable axle to use in my 85 350x and a new boss machine bearing carrier.Also the axle has the 300ex durable sprocket hub.The problem is the chain is not in alignment do i need the 350x durablue sprocket hub the chain needs to be closer to the carrier.

[SWIGIN]

can the sprocket be put on the inside of the hub?

[fire1]

it already is on the inside i guess i could machine some spacers